@article{ref1,
title="The effectiveness of safety activities including safety competency",
journal="Journal of the Japan Society for Safety Engineering",
year="2019",
author="Shimodaira, Hiroshi and Wakakura, Masahide and Uno, Kenichi and Makino, Ryoji",
volume="58",
number="2",
pages="117-123",
abstract="[in Japanese]<p /> <p>Language: ja</p>",
language="ja",
issn="0570-4480",
doi="10.18943/safety.58.2_117",
url="http://dx.doi.org/10.18943/safety.58.2_117"
}